babbitt



(No Model.) 2 8heets--Sheet 1.

B. T. BABBITT. Multiple Mold for Casting Gun Barrels.

No. 232,228. Patented Sept. 14,1880.

Fig. 2.

ATTE STI if. M.

(No Model.) 2Sheets-Sheet 2.

B. T. BABBITT.

Multiple Mold for Casting Gun Barrels.

No. 232,228. I Patented Sept. 14,1880.

iiWMiiiil UNITED STATES PATENT OFFICE.

BENJAMIN T. BABBITT, OF NEW YORK, N. Y.

MULTIPLE MOLDS FOR CASTING GUN-BARRELS.

SPECIFICATION forming part of Letters Patent No. 232,228, dated.September 14, 1880.

Application filed April 20, 1880.

To all whom it may concern Be it known that I, BENJAMIN T. BABBITT, ofthe city of New York, in the county and State of New York, have inventedcertain new and useful Improvements in Multiple Molds for CastingGun-Barrels, of which the following is a specification.

My invention relates to multiple molds or mold-boxes constructed with aseries of molds in which a number of gun-barrels may be cast at onetime.

The invention consists in a mold-box composed oftwo parts or sections,constructed with a series of molds for gun-barrels arranged side byside, a pouring hole or gate at one end communicatin g with the severalmolds, and an exhaust-nozzle at the other end, also communicatingwiththe several molds, to provide for exhausting the air from the molds.

In order to facilitate the construction of the mold-box and to insurethe proper centering of the parts or sections one upon the other, thelower partor section is provided with upwardly-projecting flanges,between which the upper part or section fits, and the molds extend, theentire length of the upper part or section, and the cormnunication ofthe several molds with one pouring hole or gate and one exhaustnozzle isconveniently effected by grooves formed in the inner end corners of saidupper part or section. v

In the accompanyingdrawings, Figure 1 represents alongitndinal sectionthrough a moldboX embodying my invention. Fig. 2 represents a transversesection thereof. Fig. 3 represents a side view of what is in thisinstance the upper part of the mold-box. Fig. at represents a side viewof the under side thereof. Fig. 5 represents an inverted plan of said upper part; and Fig. (3 represents an end view thereof.

Similar letters of reference designate corresponding parts in both thefigures.

A designates one of the parts or sections of the mold-box, and B theother part or section thereof. Any desirable means may be employed forholding or looking the two parts or sections together which will at thesame time permit of their being readily separated.

The devices here employed for this purpose consist of pins or studs 0,projecting from the lower part or section, A, and passing looselythrough holes in the upper part or section, B, which is secured in placeby the keys at.

(No model.)

In order to enable the mold-box to be cheaply made, and to facilitatethe proper centering of the parts or sections A and B one upon theother, the part or section A is constructed with upwardlyprojectingflanges A at each end, and the part or section B is of a length to fitbetween saidflanges, as clearly shown in Fig. 1. In this mold-box areformed any number of separate molds D, of which three are here shown,and E designates a pouringhole for the entrance of the molten metal,which communicates with each of the molds D.

In order to render the cast barrels of uniform density and preventblow-holes, it is desin-able to exhaust the air from the molds; and toprovide for this I employ an exhaust-nozzle, F, at the other end of themold-box from the pouring-hole, and in communication with the severalmolds D. I

hen the part or section A is constructed with the flanges A the molds I)should extend the full length of the part or section B, and when soconstructed the communication of each mold with the pouringhole andexhaust-nozzle may be conveniently effected by grooving the lower cornerat each end of the part or section B, forming passages b, (clearly shownin Fig. l and in dotted outline in Fig. 2,) so as to connect the ends ofall the molds D.

By my invention I provide a mold which may be cheaplyconstructed and inwhich large numbers of gun-barrels may be cast ver' quickly.

What claim as my invention, and desire to secure by Letters Patent, is-

1. A mold-box composed of two parts or sections constructed with aseries of molds for gun-barrels arranged side by side, a pouring hole orgate at one end communicating with the several molds, and an exhaustnozzle at the other end, also communicating with the several molds,substantially as specified.

2. The mold box composed of the part or section A, provided with theflanges A, and the part or section B, fitting between the said flanges,the molds D, extending the entire length of the part or section B, thepouringhole E, the exhaust-nozzle F, and the passages 1), consisting ofgrooves in the inner ends of the part or section B, substantially asspecified.

B. T. BABBITT.

Witnesses HENRY T. BROWN, FREDK. HAYNES.

